Extending Shelf-Stockers Expiration Date into the 70s

 Older grocery shelf stockers. could work better into their 70s with rolling kneepads and electric arm lift/back-brace-power assist to move those heavy boxes full of cans and packages. Heck, trimming 20 pounds off a 30-40  lb box of cat litter packages would be quite useful for dozens of such lifts a day.